package demo1;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: liangyuanzhang
 * Date: 2025-2-01
 * Time: 9:31
 */

class MyValue{
    public int val;
}

public class Test {
    public static void swap2(MyValue myV1,MyValue myV2){
        int tmp = myV1.val;
        myV1.val = myV2.val;
        myV2.val = tmp;

    }
    public static void main(String[] args) {
        MyValue myValue1 = new MyValue();
        MyValue myValue2 = new MyValue();

        myValue1.val = 10;
        myValue2.val = 20;

        System.out.println("交换前："+myValue1.val+" "+myValue2.val);
        swap2(myValue1,myValue2);
        System.out.println("交换后："+myValue1.val+" "+myValue2.val);

    }
    public static void swap(int x,int y){
        int tmp = x;
        x = y;
        y = tmp;
    }

    public static void main1(String[] args) {
        int a = 10;
        int b = 20;
        System.out.println("交换前:" + a +" "+b);
        swap(a,b);
        System.out.println("交换后:" + a +" "+b);

    }
}
